Winding mechanism.



C. T. HENDERSON.

WINDING MECHANISM.

APPLICATION mu) MAY16\ 1914.

1,304,565,. Patented May 2'7, 1919.

UNITED STATES PATENT OFFICE.

CLARK '1. HENDERSON, 0F MILWAUKEE, WISCONSIN, ASSIGNOR TO THE CUTLER- HAMMER MFG. 00., OF MILWAUKEE, WISCONSIN, A CORPORATION OF WIS- I consm.

Specification of Letters Patent.

Patented May 27, 1919.

Application filed Kay 16, 1914. Serial No. 839,049.

such as that disclosed in my co-pending application Serial No. 833,229, filed April 20, 1914. Said application discloses means for feeding a roll of material to a calendering machine and the present invention may be advantageously employed in connection therewith to rewind the material as it leaves the calendering machine. Itshould be understood, however, that the invention is in no wise limited to this particular use thereof.

For the purposes of illustration I have schematically illustrated the present invention as employed in the aforesaid relation and this embodiment thereof will now be described.

The drawing schematically shows a roll of material 1, fed by a mechanism 2 to a calendering machine exemplified by a plurality 'of sets of rolls 3, from which it is delivered the roll 1 is first passed over the roll 6, then.

beneath the roll 7 and over the roll 8. The rolls 6, 7 and 8 thus constitute the slack take up, while the adjustable roll 7 acts to tension the material, the frame 9 being provided with a weight 11 to give the desired tension. The roll -6- is positively operated through gearing 12 by an electric motor 13 in a direction to unwind the material from roll 1 and feed said material to the calendering machine. The motor 13 in turn is conamount of slack between the rollers 6 and 8 within. predetermined limits, said rheostat being governed in its operation by movement of the tension roll 7 The connection between the roll 7 and the rheostat 14 includes a rope or cable 15 passing over a pulley 16 attached to the rheostat arm, said rope having at its opposite ends weights 17 and 18, the latter resting upon the frame 9. The weight 18 is heavier than the weight 17 so that as the slack in the material increases and the frame 9 descends said weight will operate the rheostat in a direction to slow down the motor 13 and stop the same if the frame descends to a certain position. On the other hand, when the slack decreases the frame 9 is raised and the weight 17 acts upon the rheostat to move the same in a direction to accelerate the motor 13. Thus provision is made for varying the speed of the feeding roll 6 in accordance with the slack conditions which, as aforesaid, maintains the amount of slack within predetermined limits while the weighted roll 7 at all times maintains the material under constant tension.

The mechanism 4 is similar in construction to the mechanism 2 and includes a slack mechanism comprising three rolls 19, 20 and 21. The rolls l9 and 21 are fixed while the roll 20 is carried by a pivoted frame 22 provided with a weight 23 and a stop 24. The material, upon leaving the rolls 3 of the calendering machine, is carried over the roll 19, then beneath the roll 20 and over the roll 21 to the rewinding device 5.

The roll 21 is driven through suitable gearing 25 by an electric motor 26 and in turn drives the rewinding device 5. As illustrated, the roll 21 is operatively connected to the device 5 by a belt 27 and a slip clutch 28 associated with the latter. The roll 21 thus acts to feed the material from the machine to the rewinding device 5 and to operate the latter, while the roll 20 maintains the material under constant tension in its passage from the machine to the rewinding device.

As will be apparent, as the diameter of the new roll of material increases the peripheral speed thereof will increase with a consequent tendency to wind the material faster than it is fed by the roll 21. The slip clutch 28, however, meets this contingency, said clutch being set to slip at a torque sufliciently low to prevent undue strain on the material. trolled by a rheostat 14 to maintain the I In practice, the material may be delivered from the calendering machine at varyingspeeds and it is therefore preferred to control the speed of the feeding roll 21 similarly to the feeding roll 12. To this end the motor 26 is provided with a speed regulating rheostat 29 similar to the rheostat 14. The rheostat 29 has an operating cable 16 provided with. weights 17 and 18, the same as the rheostat 14. Thus provision is made whereby the speed of the feeding roll 21 will be proportional to the speed at which the material is delivered from. the machine, and in consequence the speed of the device 5 will also be proportional to the speed of delivery.

Considering the mechanism as a Whole it will thusbe observed that the material is fed from the roll 1 at a speed correspond- I by Letters Patent is:

1. The combination with means for feed ing material from a roll to a receiving ma chine at a speed corresponding with the speed of the latter and maintaining the material as fed under a constant tension, of :1

winding device, a power driven feeding device interposed between said winding device and the machine, and operatively connected to said winding device to operate the same, and means automatically controlling said feeding device to vary the speed thereof and of said winding device jointly in accordance with and proportionally to the variations in device interposed between said winding device and the machine, and operatively connected to said device to operate the same, and means automatically controlling said feeding device to vary the speed thereof in accordance with the variations in slack of the material delivered by the machine, the operative connection between said feeding device and said winding device including a slippage connection for permitting slippage of the latter as the roll formed thereon increases in diameter.

In witness whereof, I have hereunto subscribed my name in the presence of two witnesses.

CLARK T. HENDERSON. Vllitnesses;

TEKLA BAST, L. A. WATSON. 

